Fluid-pressure engine.



'G. GASSADY. V FLUIDTRESSURE ENG-INE- APPLICATION FILED JUNE 23, 1910.

Patented May 9,1911.

.[JV' V'E'JV'TO R George Cass ferentially around the axis of 'line C C in Fig.1

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GEORGE CASSADY, OF NEW' WES TMINST'ER, BRITISH COLU ma. CANADA.

FLUID-PRESSURE ENGINE.

useful Fluid-Pressure Engine, of which the following is a specification.

This invention relates to a fluid pressure engine wherein the pressure acts upon the' pistons within cylinders arranged circumrotation and parallel thereto and these pistons have slidable contact with an oblique rotatable plane, I

by which means the fluid pressure being admitted successively to the cylinders the oblique plane and the shaft to which it is attached are rotated. A

The invention is particularly described in the following specification, reference being made to the drawings by which it is 'accompanied, in which:

Figure 1 is a vertical longitudinal section through the engine, Fig. 2, a cross section on the line A A in Fig. 1, Fig. 3, a vertical section on the line B B in Fig. 1 looking in the direction of the a'rrowB, Fig. dis a face view of the valve by which admission and exhaust of the fluid under pressureto the cylinders is controlled, Fig. 5 is a cross section of the same, Fig. 6 is a section on the 7 showing the steam and exhaust ports of the port face member, and Fig. 7 is a face view of the disk which closes the end of the cylinders showing the passages which connect .the steam ports to the cylinc ers.

In these drawings 2 represents the driving shaft of the engine which is rotatable in. bearings 3 and 4.- of the base 5, the-bearing 4 being provided with annular V grooves by which end movement is prevented and wear in that direction is taken up.

Between the bearings 3 and i the base frame of the engine is formed s emicylindrical concentric with the axis of theshaft 2 the circular ends 6 and 7 being part" of the base 5 and a casing 8 forming the upper half of the cylindrical transmission casing. Within this casing is inclosed the connection of the reciprocating to the rotatable parts of the engine which connection will be described later.

On the outer side of the. circular end 7 is secured a connected. group of cylinders 10. These cylinders, preferably three in num- Specification of Letters Patent. Pajgented May-9, 1911, Application filed June 23, V

1910. Serial No. 568,536.

her, have their axes parallelto that of the shaft 2 which is produced through the center of the group to operate the admission and exhaust valve and are radially equidistant from it and from one another.

an inclosing casing-35 may-be? carried, and. the outer ends of the cylinders areclosed by a cover flange 13 on whlch 1s secured the to be described later. Within each cylinder rod 16 of'fwhich passes through a gland in 11 and 7. and'has'secured toits outer end a head 17 which is endwise movable in a doveand 7 of this portion" of the base. In axial alinement with the piston rod 16 the head 17 carries rotatable bearers 19 the bearing surfaces of which are obliquely cut to engage the faces-of an oblique flange 20 carried by and rotatable with the shaft 2.

Steam or-other fluid under pressure being hereinafter set forth on one sided? the engine and to the other side of the pistons on the diametrically opposite sideof the en inc, and exhausted from the opposit'efside' 0% pistons in each case, the pressure of the pistons acting on the oblique planes ofgthe flange 20 causes that flange to rotate and with it the shaft 2 to which it isjse'cured: The piston rod support the free ends ofthe rods 11 and receive the lateral pressure of the oblique thrust, and the pivotal mounting of the bearers 19 permit them to adjust themselves to the changing angle of the flange 20 as it rotates. The outer bearing of the member 19 in the head 17 is fitted into a threaded bearing member 19 which threads into the member 17 and may be turned to take up art.

On the outer face of the cover flange 13 which closes 10 is secured a port face member 25 in which is an exhaust chamber 26 to which is connected the exhaust pipe 27 of the engine. This member 25 is also provided with through ports 21 and 22 which are continued through the cover flange 13 and form a connection from the steamchest 27 in which is the valve 28 and to which steam chest the The several cylinders 10 are secured be-. tween circular disks 11 and 12 around which ,tailed slide 18 secured between the ends 6 admitted to one side ofthe pistons 15 asthe heads 17 in their slides 18 wear as will be clear to those skilled inthe the outer ends of the cylinders port face member 25 andthe valve casing 27 10 is a piston l-Eifthe steam or other fluid under pressure is delivered by a pipe 29. The steam ports 21 deliver directto the adjacent ends of the cylinders and those 22 are connected by pipes or ducts and by passages 31 in the of steam to, and its exhaust froni, the cylin-' ders 10 is secure 1 on the end of the shaft 2 so as to berotatable with it; the attachment being such as to afford the valve an opportunity of endwise moving to take up its bearing on the face of 25. The valve 28 is preferably fitted on a sleeve which is endwise movable on a feather in the end of the shaft to which sleeve the valve is: secured by a set screw so that the-ports of the valve may be adjusted in relation to those of the port face.

The valve 28 is provided with a through admission port 32 which through port is carried around a concentric arc of the valve,

at a radial distance equal to that of the ports 21, 22 of the port face member. On the diametrically opposite side of the valve is a chambered exhaust port 33 which when brought opposite to them connects the ports 21, 22 of the portface member, shown in dash and double dot lines in Fig. t, with a ring of exhaust apertures3 t in the same port face and which connect with'the exhaust chamber 26.

In operation steam or other fluid under pressure is admitted by the pipe 29 to the steam chamber 27 and as they are successively uncovered by the through port 32 of the valve 28 will pass to the adjacent ends of the cylinders 10 through the ports 21 and through the ports 22 to the farther end of the diametrically opposite cylinder, through a pipe 30 and its passage 31 in the end plate 11. Simultaneously. the opposite ends of these cylinders are respectively open to the exhaust through the same passages as far as the valve 28 where they are connected to the ring of exhaust apertures 34 by the chambered port 33 of the valve. As the shaft 2 is rotated under this application of pressure the valve 28- is carried with it and the admission and exhaust' of the several cylinders are successively controlled by the rotation. H

The engine is compact and self-contained, its rotatable parts are balanced and it is simple in construction and is most eflicient in thedevelopment of power.

The. steam cylinders and passages may be conveniently jacketed, if necessary, with superheated steam'and the inclosure of practically all the moving parts Within a small cylindrical chamber renders the lubrication of those parts easy of accomplishment. y

The valve is susceptible of easy adjustment to work the steam, expansively in the cylinders so that the engine may be rendered economical in the useof steam.

. Having now particularly described my invention' and the manner of its operation, I hereby declare that what I claim as new and desire to be protected in by Letters Patcut, is:

In a fluid pressure engine, a pair of end I disks, open ended cylinders supported by and between said disks, .one ofsaid disks forming a cylinder head for one end of said flange, said port face member having an exhaust chamber opening, through one side, said open side being closed by said cover flange, said port face member having an exhaust port leading to atmosphere, said port face member having ports leading into said exhaust chamber, a rotatable shaft projecting through apertures in said disks and in said cover flange and in said port face member, a rotaryvalve mounted on the end of said shaft adjacent to said port face memher and having distributing ports to. effect communication between the exhaust ports ofsaid port face member and the ports that communicate with the cylinder ends, said rotary valve having a working agent inlet port to register with the ports of said port face member at times, and a valve casing having a" working agent inlet port fitted over said valve and the end of said shaft that carries the valve, pistons operating in said cylinders, piston rods carried by said pistons and power translating" connections between said piston rods and said shaft. X y

In testimony whereofl have signed my name to this specification in the presence of two subscribing Witnesses.

' I GEORGE CASSADY. v Witnesses; v

ROWLAND BRITTAIN, ALEXANDER SMITH. 

